Jamia Millia Islamia Increasing Decreasing Function Previous Year Questions (PYQs)
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Showing 2 questions
The function $f(x)=x+\cos x$ is
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Solution
$f'(x)=1-\sin x\in[0,2]$, so $f'(x)\ge0$ for all $x$ (zero only when $\sin x=1$).
If a function $f(x)$ is increasing, then its derivative must be:
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Solution
Increasing function
$f'(x) > 0$
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